Gibbs Free Energy

  • Thread starter jones106
  • Start date
  • #1
7
0
Hey guys, i'm hung up on the Gibbs Free Energy equations. I know that ?G° is the free energy change under standard conditions (1 M, 1 atm, 25ºC), and that it is characteristic for a given reaction. I think that when a reaction is occurring under conditions that are not standard the equation ?G=?Gº + RTlnQ is used to account for these different conditions (am I correct here?). My problem, however, is with ?G'º (which my textbook also defines as standard free energy change. What is the difference between ?Gº and ?G'º and when do you use which? Does it have something to do with pH? I just can't seem to get this. Any help would be greatly appreciated. Sorry for some reason my delta symbols come out as question marks.

Thank you very much,
Taylor
 
Last edited:

Answers and Replies

  • #2
chemisttree
Science Advisor
Homework Helper
Gold Member
3,447
483
Could the prime " ' " be used to mean the first derivative?
 
  • #3
siddharth
Homework Helper
Gold Member
1,127
0
I think the OP needs to give the context, and how his book defines Gº and G'.
 

Related Threads on Gibbs Free Energy

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
3
Views
6K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
5
Views
7K
  • Last Post
Replies
9
Views
1K
  • Last Post
Replies
1
Views
796
  • Last Post
Replies
8
Views
756
  • Last Post
Replies
1
Views
717
Top